/Engine/Source/Runtime/Core/Public/Math/TransformNonVectorized.h
Quaternion addition is wrong here. This is just a special case for linear interpolation. Use only within blends!! Rotation part is NOT normalized!!
[TTransform](API\Runtime\Core\Math\TTransform)< T > operator+ ( const [TTransform](API\Runtime\Core\Math\TTransform)< T > & Atom ) const